Function has_lower_upper_exp_for_non_zero

build.rs:210–214

()

}

fn has_lower_upper_exp_for_non_zero() -> bool {
    // LowerExp/UpperExp for NonZero* were added in Rust 1.84.
    // <https://doc.rust-lang.org/stable/std/fmt/trait.LowerExp.html#impl-LowerExp-for-NonZero%3CT%3E>
    can_compile("fn a(x: &core::num::NonZeroI32, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { core::fmt::LowerExp::fmt(x, f) }")
}

fn use_feature_or_nothing(feature: &str) {
    if has_feature(feature) {